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Finland

MacGregor's new ship-to-ship compensation system

Publication date: 2017-02-28

Tags: maritime, finland

MacGregor's new ship-to-ship compensation system

The Finnish company has launched a new crane compensation system for offshore ship-to-ship load transfers.

The new system employs a motion reference unit on the secondary vessel's deck which transmits motion data to the crane on the primary ship via a high-speed redundant wireless link. Combining motion data from both vessels, the system calculates and applies the winch compensation necessary to minimise hook movement at the load-handling zone on the secondary vessel.

The system also features precise tension and position control for accurate load hook-on, pick-up landing, and hook-off, allowing the operator to employ a less conservative approach to calculating the maximum load that can be safely handled in any given sea state.

Ships with existing MacGregor offshore cranes can be retrofitted with the new system.

"MacGregor understands the complexity of ship-to-ship load transfers and the limitations imposed by unpredictable, non-synchronised movements in a seaway. With the systems currently available, a crane's capacity is effectively de-rated because of the conservative approach required to minimise risks associated with the relative movements of the vessels," Ivar Fjermeros, Senior Sales Manager, Advanced Offshore Solutions, MacGregor, said.

Fjermeros further added, "The safety benefits mark a significant improvement for offshore transfer operations. When these are combined with maximising the crane's lifting capacity, improved load transfer times and a substantial, real-world increase in weather windows for ship-to-ship operations, this system really does offer some ground-breaking benefits."

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